Improvement in lathes



wam fa.

3. Yum um s QAM: Lm vn.

'ated di-fitr,

JAMES IHEVLAN, 0F CHICAGO, ILLINOIS, ASSIGNOR TO HIMSELF AND `Lathe; and I do hereby declare lthat the lhllowing the indication of identical parts.

WILLIAM Wtsnoii,

Letters Patent No. 112,051,

OF SAME PLAGE.

dated February 21, 1871.

IMPROVEMENT IN LAT-rlES.

The Schedule referred tain these Letters Patent anni making part of tlhe same.

To all whom it muy collec/111:

Be it ltnown that l, .lawns Kncvnix, of Chicago,

in the county of Cook and State ot` Illinois, have invented a new and useful improved Revolving Gangis a full, clear, and exact description thereof', rel'erence heilig had to the annexed drawing making a part of this specification, in which- Figure l is a perspective view ot' in v improved lat-he.

Figure 2 is a perspective view ot' the cutter'. Figureis a longitudinal vertical section ot' the feed-spout. Figure 4 is an elevation of one end of the lathe.A Figure 5 is a perspective view ot' the devices for operating the tail-spindles.

Figure 6 is a plan view ot'certaiu parts ofthe driving mechanism.

Figure. 7 is a perspective view of the guide which operates the tail-spindles.

Figure S is a perspective view of the trame and devices for regulating the motion of the spiders.

In all the figures the same letters are employed in This invention relates to automatically operating lathesfor wood-turning, and is au improvement upon the machine set t'orth in Letters Iatcnt No. 95,694, granted to me on the 12th day' ot' October, A. D. 1865).

The improvement consists ia combining with the head and tail-spindles, which carry the stick to he operated upon, cutters, which are carried upon the same spiders or disks with the spindles, and are brought into action while the stick is revolving.

4In carrying the distinguishing principle into effectn'e-w combinations and arrangements of the parts, of the machine have been required, which will he distinctly indicated in the followingr spccilicatiou of construction and claims.

In the annexed drawing` The parts A A and li constitute the frame ot' the machine, the sides having such shape as may be necessary for carrying the shafts of the operative meeh' anism.

The power taken from any convenient prime mover is applied to the driving-shalt C b v means ot' the ordinary tight and loose pulley l).

From this shaft motion is communicated by thc belt a and pulley B to a pulley, F', ou the shaft F. These pulleys may be the ordinary cones as used to regulate the speed ot the driving-shaft.

rlhe shaft F has its bearing in the side frame-pieces A A.

The wheelsfor spiders Q Q are carried on, but not with the shaft F, which forms merely an axle, upon which they turn ti'eely, heilig actuated by independent mechanism.

` responding cone ot' pulleys H on the\counter-shaft I,

from which the pulley K and belt d communicate moi tion to the pulley L on the counter-shaft M.

These counter-shafts have their hearings on the trame-pieces .I J, which are pivoted at one end to the standards c.

On the counter-shaft )I are the friction-wheels N X, which are brought into frictional contact with the peripheries ol' the spiders or wheels Q Q on one side ot' the lnachiue.

All these wheels Q Qbcing rigidly connected by rods W W passingr through them, all motion coniniunicated to part will be communicated to all.

'lhe degree ot' this frictioual Contact isregnlatcd, as illustrated, by a wedge, g, driven under one end ot' the frame J. For this it Vis obvious that any equivalent mode ot' regulation may be substituted, so that the speed of thc wheels Q Q is entirely within the conti-ol et the operator.

The wheels or spiders Q Q carry the head spindles It, which turn freely in bearings in the wheels Q Q, and are rotated by belts passing around a pulley, S, on thel spindle, and around a grooved pulley on the shaftI, and rotating with it, the number ofthe grooves or bearing surfaces, ofcourse, corresponding with the number of head-spindles. L

The tail-spindles are carried by tho wheels or spiders Q' ci.

The)Y are constructed ,with splines, indicated by the pins h and slots 11, which prevent their revolving on their own axes, while permitting them to be moved longitiulinally.

This movement is cliected by means of the cam- -guide Y, secured to tl1el1ead-plate between the wheels Q Q'. The form of this guide is shown iu Iig. 7, where itis represented reversed, in perspective. l

A stirrnp, X, is placed astride ot' each tail-spindle, and pivote'd to one of the brace-rods, W'. Y

It has a diction-roller, li, attached at the end, and operates thc tail-spindle by means ofa pin, j, passing through a slot in the stirrup into the spindle.

A spring-latch, with a beveled head, attached to the tail-spindle, passing inward through the inner wheel Q', is so arranged that as the tail-spindle is thrust toward the head-spindle, the spring, yielding, will permtthe head to pass through the wheel Q', until, havingr passed it, it will hc thrown out, and catching against the inner face of the wheel will lock the tail-spindle in position until the latch is detached.

lhis is effected by means of a. plate, I, on the cam V, shaped as shown in fig. 7.

When the latch has been detached hy the inclined edge of the plate i, the friction-wheel i on the stirrup X encountering the inclined surface of the cam V adjoining the plate l, the tail-spindle will be retracted,

and will so remain until the wheel i, striking the suru face of the vertical portion of the caln Y, as shown in tig. 7, it will he again projected to seize a stick to bc turned.

.lhis mechanism permits the stick to be operated upon to be, at the proper time, engaged between the tail and head-spindles, and dropped when it has been turned ofI.

The cutting mechanism is shown in detail in tig. 2. i

. But one cutter is shown, but it will be understood that the form and number ol thc` knives must depend upon the work to be performed, and that finch set of spindles is provided with its own cutting mcehal'lism.

Z is the cutter, attached to an arui pivoted on one t their front ends will come under thc piece heldbetween the chucks, while the tail piece extendingr toward the central Shaft forms a lever, 3, the end of' which extends under thev collar 7, turning with the shaft 4.

On the periphery of the collar 7 there is screwed an adjustable boss, 3, which forms a cam for picssing against the tail piece, and thereby forcing thc cutters set in the throat of the cutter-head against the lower surface of the revolvingpiete to be turned, and gradually pressing the cutters forward until the piece is finished, when, the cam releasing the tail piece, the cutters will be withdrawn by the action of a spring, 8, resting on the collar. v

r.lhe collar 7 is revolved in -the following manner:

1t is keyed to the shafts 4. These shafts have their bearings in the arms of the spiders or wheels Q Q', nearer the center than the rods \V, and extend through both the wheels Q, each carrying upon its outer end a spur-pinion, 5, which meshesinto a stationary spurwheel, shown in fig.`4, bolted to the frame.

As the spiders or wheels Q Q' revolve, the pinions 5 and collars 7 will be caused to revolve at the saine speed. 'lhc knives will thus be brought into action, one at each revolution. '.lheir operation must bc so timed by the cam 3 that thcywill be brought to bear against the stick after it is seized by the chucks.

The wood is fed into the hopper, shown in figs. 1

` and 3, and taken by the chucks from the hooks in the forth.

.The arrangement of the parts of the machine is such, that at the instant the chucks are passing the said hooks, the cam will throw forward the tail-spindle -to confino the stick. The stirrup, acting asalever,

stick.

be brought into action, and turn down the stick while the spiders are completing about half a revolution, when, thc latch being raised by the cam l, the cam V will retract the tail-spindle, and thus disengage thel stick, which will fall below the machine.

What I claim as my invention, and desire to secure by Letters latent, is-

1. In combination with th head and tail-spindles, the former of which revolve n their own axes, and also around a common axis, as described, cuttersfarranged to turn ot` the stick while ret'olving around the same commonaxis. v

2. 'Ihc cutters Z, suspended on rods lV between the spiders, and constructed with tailzpieces, 3, and springs, 8, in combination with thecam which brings the cutters into action, substantially in the manner set forth.

3. In combination with vthe cutters and ca'm last aforesaid, the pinions 5, shafts 4, revolving with the spiders, and fixed spur-wheel 6, substantially as set forth.

`4. In combination with the lathe-head -Q Q' and shaft F, independentlyfrevolving, the adjustable frieheads, substantially in the manner set forth.

5.' In combination with the tail-spindles and cam lV, the stirrnps X, arranged to operate the spindles,

substantially in the manner set forth.

(i, In combination with tbe tail-spindles, the springlatches Y, andcam V for detaching said latches from the spider-rim, substantially inthe manner set forth.

XVitnesses: JAMES KIEVLAN.`

' EDWARD PAYNE, Y Y

HARRY S.' SPRAGUIJ.

same manner as in my said former Letters Patent set will firmly press the centers against the ends of the' As'soon as the stick is centered the knife should' tion-wheels N, communicating motion to ythe lathe- 

